JP2015080683A - Waist part exercise equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide waist part exercise equipment by which various kinds of training for muscles of a waist part can be performed smoothly and safely with a single and simple apparatus configuration, an exercise like this can be performed continuously without stress, an exercise of a waist part is safely performed in an unintended fashion while a person performing the exercise is seated, a balance exercise can be performed safely, and furthermore, posture correction can be performed.SOLUTION: In waist part exercise equipment 8 composed of a seat part 1, a lower base 2, and a support protrusion 4 in which the seat 1 is held by the support protrusion 4 so as to be tilted and rotated horizontally, an elastic body is provided between the seat part 1 and the lower base 2 so that a load is applied to the seat part 1 when the seat part 1 is tilted or rotated horizontally from the start position, and the seat part 1 is energized in a direction to return to the start position when the seat part 1 is tilted back to the start position or rotated back to the start position.

Description

  The present invention is a compact-size exercise device that can be used by placing it on the seat surface of an existing chair, and can perform various exercises of the lower back and without getting tired, and can further develop balance power, posture correction, etc. It relates to lumbar exercise equipment. In the present specification, the lumbar region means the waist circumference portion including the abdominal muscles, the back muscles and the like.

≪Technical background≫
A person can exercise the waist by tilting the buttocks back and forth and left and right while sitting in a chair. In this case, when the seat portion itself is inclined, the movement can be performed more reliably and effectively. Further, it is desirable that exercises of the lumbar region are performed in various directions and angles, and the exercises are naturally performed without the consciousness of the seated person.

≪Conventional technology≫
Now, as a conventional technique, there is a seat cushion that is used on a seat of a chair and contains sponge material or air inside. A seated person can tilt the buttocks to the left and right to exercise the waist. . However, the tilting operation of the buttock through these sponge materials and air does not make the center of the heel part constant, and as a result, the tilting operation is displaced and it is difficult to say that this operation is surely performed.
On the other hand, as an exercise device of this type in which the seat portion itself is inclined and can be further rotated, as shown in FIG. 12, the upper plate 12 (corresponding to the seat portion) and the lower plate 13 provided with projections 13a are formed. A waist exercise device 15 (hereinafter referred to as a conventional example) that rotates freely around the tip 13b of the protrusion 13a and tilts in all directions or rotates left and right can be considered. In addition, this exercise device 15 can be used also as a balance power training device on the structure.

  Now, in this lower back exercise apparatus 15, the buttocks on the upper plate 12 are tilted integrally with the upper plate 12, and the tilting operation of the buttocks can be performed more reliably and effectively than in the case of the seat cushion. The reason is that in the seat cushion, the heel portion does not have a fulcrum, and in the exercise apparatus 15, the heel portion moves integrally with the upper plate 12 and as a result, the heel portion inclines through the fulcrum. by.

Furthermore, in this exercise device 15, the center of the buttocks operates without shaking. That is, the seated person sits with the center of the buttocks positioned at the center of the upper plate 12, so that the buttocks operate integrally with the upper plate 12 with the center as the center, and the center is not shaken. As a result, although the body moves following the movement of the buttocks up to the shoulder during exercise, the head is not easily affected, and the position of the eyes can be kept constant. In other words, even if you exercise while looking at the screen of a personal computer, it is difficult to cause eye fatigue. Furthermore, the movement area of the buttocks is an operation area centered on the center of the buttocks, and the movement of the hips does not become large compared to, for example, the movement of swinging the hips left and right such as a balance ball (the center of the buttocks itself swings left and right). Inconspicuous.
The prior art has been described above.

Now, the following problems are pointed out with the exercise apparatus 15 of the conventional example which consists of the upper board 12, the lower board 13, and the protrusion 13a. This will be described with reference to FIG.
≪First problem≫
First, when a seated person sits on the upper plate 12 and exercises, for example, even if the upper plate 12 is intended to be slowly inclined, the upper plate 12 is not inclined rapidly, making it difficult to perform a smooth inclination operation. There is a problem of feeling stressed and the danger that the seated person may fall. In addition, a problem is pointed out that when the upper plate 12 is rotated left and right around the tip 13b of the protrusion 13a, the muscles of the lower back are not trained.

The problem of the inclination speed of the upper plate 12 is that the inclination reaction of the upper plate 12 to the load applied to the upper plate 12 is too fast for the seated person. If it supplementarily demonstrates, even if it is so slight load that the load of the collar part added to the upper board 12 will leave | separate from the center of the upper board 12, it will incline. Furthermore, the inclination speed of the upper plate 12 increases as it inclines. The cause of the stress is that the inclination speed of the upper plate 12 is too high for the seat occupant. As a result, the seat occupant adjusts and controls the load applied to the upper plate 12. In other words, it is pointed out that for the seated person, this adjustment and control operation by the hips (buttock) causes stress.
Moreover, the cause of the fall of the seated person is that, in addition to the tilting speed of the upper plate 12 being too high, the tilted angle at which the seated person loses balance as the upper plate 12 tilts. Further, when the seat occupant rotates the upper plate 12 from side to side about the tip 13b of the protrusion 13a, the problem that the muscles of the lumbar region cannot be trained is that the load necessary for training is applied to the lumbar region when the upper plate 12 is rotated. It is caused by not taking it.

≪Second problem≫
Secondly, there is a problem that it becomes troublesome while exercising and the seated person stops using the device, that is, does not last long. This cause will be explained step by step. The seated person tilts or rotates the upper plate 12 in one direction from the start position indicated by the solid line in FIG. 12, then returns the upper plate 12 to the start position, and then performs the same operation in the other direction. That is, a series of operations from one direction to the other direction of the upper plate 12 are reciprocated and repeated. However, when the upper plate 12 is returned to the start position, the upper plate 12 is temporarily stopped, and the seated person returns the upper plate 12 to the start position by applying force to the upper plate 12 again from this stopped state, that is, from zero. And this operation is done consciously. Now, the above action, which is carried out with the force applied to the upper plate 12 and further conscious, is repeated, but these are felt troublesome for the seated person, and this trouble is an obstacle to the continued exercise. It is pointed out as a cause.

≪Third problem≫
The third problem is that the operation of the upper plate 12 is not stable when the upper plate 12 is inclined by turning the collar while the end 12a of the upper plate 12 is in contact with the seat portion 14. As a cause thereof, the seat surface contact portion 12b of the upper plate 12 is affected by the uneven state or the hard and soft state of the seat surface 14, and for example, when the seat surface 14 is soft, the seat surface contact portion 12b sinks onto the seat surface 14. Is mentioned. Furthermore, if the seating surface contact portion 12b of the upper plate 12 is uneven or angular, the seating surface contact portion 12b does not smoothly contact the seating surface 14, and this causes the upper plate 12 to contact. The operation of is not stable. In addition, the movement of the upper plate 12 through the fulcrum is too sensitive for the seated person, which causes the movement of the upper plate 12 to be unstable.

≪About this invention≫
The lumbar exercise device of the present invention has been made in view of the above-mentioned problems, and various exercises of the lumbar region can be smoothly performed with a single simple device configuration, and such exercise continues, safely and stressfully. The purpose of the present invention is to propose a lumbar exercise device that can be used without any movements, sits and can naturally exercise the lumbar region, can perform balance exercise safely, and can also correct posture. Furthermore, it aims at proposing the waist exercise equipment which can also exercise a foot.

≪About each claim≫
The technical means of the present invention for solving such a problem is as follows. First, claim 1 is as follows.
It comprises a seat portion 1, a lower base 2, and a support protrusion 4 positioned between the seat portion 1 and the lower base 2, and the support protrusion 4 rotatably supports the seat portion 1. In the lumbar exercise device which is inclined in various directions with the tip of the protrusion 4 as a fulcrum or rotates left and right around the tip,
A vertical elastic body 3 having elasticity is provided between the seat portion 1 and the lower base 2, and the vertical elastic body 3 is configured such that the seat portion 1 has the tip of the support protrusion 4 as a fulcrum. When the seat 1 is tilted from the start position, a load is applied to the seat 1 so that the tilting speed of the seat 1 is reduced, and when the seat 1 is tilted back to the start position, the seat 1 is returned in the direction of return. It is characterized in that it is energized.

  About Claim 2, it is as follows. According to a second aspect of the present invention, there is provided the waist exercise apparatus according to the first aspect, wherein the elastic body 6 is provided with elastic left and right direction elastic body 6. A load is applied to the rotation of the seat portion 1 when rotating left and right from the start position of 1, and the seat portion 1 is urged in a returning direction when the seat portion 1 returns to the start position. It is characterized by this.

  About Claim 3, it is as follows. The waist exercise apparatus according to claim 3 is characterized in that, in claim 2, the left-right elastic body 6 is made of rubber 6a having one end attached to the seat portion 1 and the other end attached to the lower base 2.

  About Claim 4, it is as follows. According to a fourth aspect of the present invention, in the waist exercise apparatus of the first, second, or third aspect, the friction reducing sheet 7 having a small frictional resistance is provided between the seat portion 1 and the lower base 2, and the front end portion of the support protrusion 4 is centered. The seat portion 1 can be rotated smoothly from side to side.

  About Claim 5, it is as follows. According to a fifth aspect of the present invention, in the waist exercise apparatus according to the first, second, third, or fourth aspect, the seat portion 1 is formed in a circular shape, and the seat portion 1 has an end 1a of the seat portion 1 on the lower base 2 surface. It is characterized by being configured so as to operate directly below.

  About Claim 6, it is as follows. According to a sixth aspect of the present invention, the waist exercise device according to the first, second, third, fourth, or fifth aspect is characterized in that the cushion 10 formed of an elastic body is mounted on the seat portion 1 and used.

≪About the action≫
The waist exercise apparatus of the present invention is configured as described above. The operation will be described below. First, the seated person puts this waist exercise device on the chair's seat, bends his knees, and usually sits with both feet on the floor. At that time, sit down so that the center of the buttocks is located at the tip of the support protrusion. Thereby, the position of the center of gravity of the buttocks coincides with the center of the seat. The body is supported by the buttocks and both legs.

  Now, the seat portion is supported so as to be tiltable with the support projection as a fulcrum and to be rotatable left and right around the support projection, and performs the following basic operation. That is, the seated person rotates the seat portion around the tip end portion of the support projection, (1) tilting motions in various directions with the tip end portion of the support projection as a fulcrum, and (2) centering on the tip end portion of the support projection. And (3) an operation of inclining the seat while bringing the end of the seat into contact with the lower base surface. Hereinafter, the operation of the vertical elastic body and the left and right elastic bodies will be described in detail for each operation of the seat portion. The name of the vertical elastic body is named because it is an elastic body that functions when the seat tilts in the vertical direction, and the name of the horizontal elastic body is the elasticity that functions when the seat rotates in the left-right direction. Named because it is a body.

The case where the seat is inclined with the tip of the support projection (1) as a fulcrum is as follows. The seated person first tilts the seat in one direction from the start position and then tilts in the opposite direction, that is, toward the start position. (Hereinafter, this inclination is called a return inclination). In this case, the elastic body in the vertical direction acts to slow down the tilting speed of the seat due to its elasticity when the seat tilts from the start position, and returns the seat when the seat tilts back to the start position. Energize to.
Now, the seated person tilts the seat that has returned to the start position in this direction, and then tilts back toward the start position again. A series of operations such as one direction from the seat portion to the other direction are repeated. The same applies to the rotation operation of the following seat. Of course, the seat portion may be reciprocated in only one direction to be inclined or rotated. The start position of the seat means the position of the seat in a neutral position in which the end of the seat can be tilted in any direction up and down or rotated in any direction left and right.

  When the seat of (2) above is rotated left and right around the tip of the support projection, it is as follows. The seated person first rotates the seat in one direction from the start position, and then rotates it toward the start position. (Hereinafter, this rotation is called return rotation). The elastic body in the left-right direction acts so as to apply a load to this rotation by its elasticity when the seat rotates from its start position, and in a direction to return the seat when the seat rotates back to its start position. Energize.

  In the case where the left-right elastic body is made of rubber, the rubber extends when the seat portion rotates from its start position and acts to apply a load to the rotation of the seat portion. When the seat returns to its starting position, the rubber urges the rubber in a direction to return the seat by the tension.

The case where the seat portion is inclined while the end portion of the seat portion (3) is in contact with the lower base surface is as follows. The vertical elastic body is sequentially pressed while the seat is tilted, and the elasticity thereof smoothes the tilting operation of the seat that is too sensitive for the seated person.
The operation of the vertical elastic body and the horizontal elastic body has been described above for each operation of the seat.

Next, a description will be given of the action of sitting and doing exercise of the waist naturally. Sitting on the seat in the same position causes muscle tension and stiffness in the waist. At this time, the human body tries to solve the above-mentioned obstacles by taking different postures, and as a result, the buttocks move, and accordingly, the position of the center of gravity of the buttocks on the seat changes and the seat is inclined. However, on the other hand, the body reacts to return the buttocks to the original posture in an attempt to maintain balance, and the buttocks return to the original posture together with the seat. In this way, the operation of the buttock is performed and repeated. This action is natural without any particular awareness.
This completes the description of the action of sitting and lumbar exercise naturally.

Next, the operation of the friction reducing sheet will be described. The friction reducing sheet has a small frictional resistance. For this reason, when the seat is rotated left and right around the tip of the support projection, the seat is easily turned left and right although a load is applied from above.
Now, the waist exercise apparatus of the present invention exhibits the following effects.

≪First effect≫
First, by providing the vertical elastic body, the inclination speed that is too fast for the seated person when the seat is inclined can be slowed by its elasticity. As a result, even when a large force is applied to the seat portion, the inclination speed of the seat portion becomes gentle, and as a result, the seated person can smoothly exercise the waist. The muscles in the lumbar region are stretched and bent through a tilting movement integrated with the seat portion of the buttocks, and are trained.
Furthermore, the seated person does not need to control and restrain the tilt speed of the seat too fast, the stress of the seated person is eliminated, and the tilt speed is restrained to prevent the seated person from falling down and to be safe. Can exercise. In addition, by providing a left-right elastic body, when the seat portion rotates left and right from its starting position around the support protrusion, a load is applied to this rotation, and the muscles of the waist are trained. As a result, the seated person can train the muscles of the lumbar region from a different direction from the exercise during the tilting motion of the seat.

≪Second effect≫
Second, you can continue to exercise your waist without getting bored. That is, by providing the vertical elastic body and the horizontal elastic body, when the seat returns to its starting position, the seat is already biased in the return direction, and the seat occupant is as described above. It is no longer necessary to apply force from scratch, and the troublesomeness felt by the seated person is eliminated, and the lumbar movement can be continued without getting tired. Furthermore, when the seat is rotated from the start position to the left and right around the tip of the support protrusion, the seated person has a strong tempo with a strong and weak rhythm that puts the force of the waist on the seat. Yes, this good tempo is another reason why you can keep exercising. In addition, the waist tension and stiffness that occur when sitting is eliminated with the body's action response as described above, but this action is one of the factors that can be performed naturally without being conscious of it, and can be continued.

≪Third effect≫
When the seat portion is inclined while the end portion of the seat portion is in contact with the lower base surface, the end portion of the seat portion is always in a position facing the lower base surface and does not contact the seat surface 14. Thus, the obstacle itself due to the unevenness of the seating surface 14 is eliminated, and the seat can operate stably. Furthermore, since the seat portion is formed in a circular shape, the end portion thereof can smoothly change the contact position on the lower base surface, and the operation is stabilized. Further, when the seat portion is inclined, the seat portion does not move at a rapid speed due to the elasticity of the vertical elastic body, and the operation is smoothly performed.

As described above, all the problems existing in the conventional example are solved, and the effects exhibited by the present invention are remarkably large. Moreover, these effects can be achieved with a simple and single device configuration that does not require a power source or the like.
≪Other effects≫

  The effect of the friction reducing sheet is as follows. When the seat is tilted and rotated left and right around the tip of the support protrusion, the friction generated between the seat and the lower base can be reduced by providing a friction reducing sheet with low friction resistance. The left / right rotation of the lower platform, which applies a load to the seat from the direction, can be performed smoothly.

  Further, the effect of configuring the left-right elastic body with rubber is simple and easy to mount and safe to touch.

≪About drawing≫
Hereinafter, the waist exercise apparatus of the present invention will be described in detail based on the best mode for carrying out the invention shown in the drawings. 1 to 11 are used for explaining the best mode for carrying out the present invention. FIG. 1 is a perspective view of the lower back exercise apparatus. 2 is a front view of the seat in its starting position, FIG. 3 is a cross-sectional view of the seat, FIG. 4 is an explanatory view of the end of the seat in contact with the friction reducing sheet, and FIG. It is explanatory drawing which shows the state which rubber | gum extended to the maximum. FIG. 6 is a main part explanatory view showing a state where the seat portion is inclined while the end portion of the seat portion is in contact with the friction reducing sheet surface. 7 is a perspective view of the elastic body in the vertical direction, FIG. 8 is a perspective view of the friction reducing sheet, FIG. 9 is a side view of the main part used with the seat part tilted forward or backward, and FIG. FIG. 11 is a side view showing a state in which the exercise apparatus is used, and FIG. 11 is a side view of the lower back exercise apparatus to which a cushion and a cover are attached.

≪About the outline of the waist exercise equipment 8≫
An outline of the waist exercise apparatus 8 of the present invention will be described. The lumbar exercise device 8 can be used by being placed on the seat surface of the chair. In addition to this use example, the lumbar exercise device 8 can be used by being placed under the buttocks in a supine posture, or by using a foot on this. The waist exercise device 8 includes a seat portion 1, a lower base 2, a vertical elastic body 3, a support protrusion 4, a socket 5, a horizontal elastic body 6, a friction reducing sheet 7, a cushion 10, and a cover 11. Hereinafter, these members will be described in detail.

≪About the seat 1, the lower base 2, the support protrusion 4, and the socket 5≫
With reference to FIG. 3 and other drawings, the seat 1, the lower base 2, the support protrusion 4, and the socket 5 of the lower back exercise apparatus 8 will be described. Now, the waist exercise device 8 comprises a seat portion 1 and a lower base 2 and a support protrusion 4 positioned between the seat portion 1 and the lower base 2, and the support protrusion 4 rotatably supports the seat portion 1. The seat portion 1 is inclined in various directions with the tip portion of 4 as a fulcrum, or is rotatable left and right around the tip portion. And the seat part 1 and the lower stand 2 were made of wood, and formed in a circular shape, the same diameter, and the front and back surfaces flat.
The support protrusion 4 has a sphere 4a formed at the tip thereof and a mounting base 4b formed at the lower end thereof, and is attached to the central portion of the lower base 2 with the support protrusion mounting screw 4c facing the sphere 4a upward. The socket 5 is formed with a socket mounting base 5 a having the same diameter as the mounting base 4 b of the support protrusion 4, and is attached to the central portion of the lower surface of the seat portion 1 by a socket mounting screw 5 b. The seat 1 is engaged with the lower base 2 by inserting the ball 4 a of the support protrusion 4 into the recess of the socket 5.

  Now, as shown in FIG. 4, when the seat portion 1 is inclined, the end portion 1 a of the seat portion 1 comes into contact with the lower base 2 surface via the friction reducing sheet 7. That is, the movable range in the vertical direction of the seat 1 is restricted by the inclination angle of the seat 1 at this time. The angle at which the end 1a of the seat 1 abuts against the lower base 2 surface is the limit inclination angle of the seat 1 at which the seated person does not fall. Note that the end 1a directly abuts against the surface of the lower base 2 when the friction reducing sheet 7 is not interposed.

  The seat 1, the lower base 2, and the support protrusion 4 will be described in further detail. The vertical dimension of the support protrusion 4 was 30 mm. Therefore, the seat portion 1 is in a horizontal state (shown in FIG. 2), and the distance from the lower base 2 is 30 mm. The seat part 1 and the lower base 2 were made of sinavenia having a thickness of 5.5 mm and a diameter of 280 mm, and the support protrusions 4 and the sockets 5 were made of a metal material to ensure strength. The sphere 4a of the support protrusion 4 is formed with a diameter of 15 mm, and the inner diameter of the socket 5 is slightly larger than the diameter of the sphere 4a so that the sphere 4a can be easily rotated. Now, since this waist exercise device 8 is used on the seat surface 14 of an existing chair, it is desired that the vertical width is narrow. In that respect, the vertical width of the waist exercise device 8 in the above configuration is 40 mm, which is not particularly different from the thickness of a generally used seat cushion.

The seat portion 1 may be changed in size, for example, for adults or children, and the vertical width of the seat portion 1 is further narrowed by using a resin material or metal material having a predetermined strength of about 4 to 2 mm. can do. Furthermore, the seat portion 1 and the socket 5, and the lower base 2 and the support protrusion 4 can be integrally formed of plastic or the like, and in this case, a cost reduction effect associated with mass production can be expected.
The seat 1, the lower base 2, and the support protrusion 4 are as described above.

≪About vertical elastic body 3≫
Next, the vertical elastic body 3 of the lower back exercise apparatus 8 will be described in detail with reference to FIGS. 2, 4, 6, 7 and other drawings. A low-resilience urethane sponge 3 a was used as the up-down elastic body 3 and provided between the seat 1 and the lower base 2. The urethane sponge 3a applies a load to the tilting operation from the start position of the seat portion 1 made in various directions with the sphere 4a of the support protrusion 4 as a fulcrum, and sits on the start position after the tilting operation is finished. The seat 1 is biased in the direction of returning when the portion 1 is tilted back.
Now, the seated person sits on the seat portion 1 (shown in FIG. 2) in a horizontal posture and tilts the seat portion 1 with the center of gravity of the buttocks on one end side. FIG. 4 shows a state where the seat portion 1 is inclined. Next, the center of gravity is moved to the other end side, and the seat portion 1 is returned to the start position. Further, the seat 1 is tilted in the other direction and returned to the start position again. This operation is reciprocated and repeated.
The details will be described below. When the seated person inclines the seat part 1 from its starting position as shown in FIG. 4, the seat part resists the elasticity of the urethane sponge 3a and the rubber 6a (shown on the left side of the seat part 1 in the figure). Tilt 1 As a result, a load is applied to the tilting operation of the seat portion 1. Next, when the seat portion 1 is returned to the start position, the seat portion 1 is urged in the return direction by the elasticity of the compressed portion 3b of the urethane sponge 3a and the tension of the rubber 6a.

  Next, the urethane sponge 3a in the case where the seat portion 1 is inclined while the end portion 1a of the seat portion 1 is in contact with the lower base 2 will be described in order. First, the seated person tilts the seat 1 until it contacts the friction reducing sheet 7. FIG. 6 shows a state in which the end portion 1 a of the seat portion 1 is in contact with the friction reducing sheet 7 at the contact point D. Next, when the center of gravity of the buttock is moved to the point B of the seat 1 away from the contact point D, a force is applied in the direction of the downward arrow C, and the end 1a is in contact with the friction reducing sheet 7, that is, the contact location is changed. While changing, the seat portion 1 is inclined. This operation is performed by turning the collar. Then, the urethane sponge 3a is sequentially pressed by the seat portion 1 in accordance with the operation of the seat portion 1 and contracts, and the tilting operation of the seat portion 1 is smoothed by the elasticity.

The urethane sponge 3a will be further described in detail. The urethane sponge 3a has a thickness of 30 mm and a diameter of 220 mm, which is the same as the vertical dimension of the support protrusion 4, and is cylindrical as shown in FIG. 7, and has a notch having the same diameter as each mounting base of the support protrusion 4 and the socket 5 as shown in FIG. The hole 3c is cut away. When mounting, the support protrusions 4 and the mounting bases 4b and 5a of the socket 5 are positioned in the cutout hole 3c. Although the urethane sponge 3a is used as the vertical elastic body 3, any elastic member may be used as long as it matches the purpose of the vertical elastic body 3.
The elasticity of the urethane sponge 3a can be set appropriately by changing the outer dimensions, thickness, density, etc. of the urethane sponge 3a in accordance with the weight of the seated person or the inclination speed of the seat 1 desired by the seated person. Also, the urethane sponge 3a has a flat front and back, so that when the seat 1 is inclined evenly against the seat 1, the lower base 2 or the friction reducing sheet 7, its direction or the load applied to the seat 1 It reacts accurately regardless of the size (other than the center of the seat 1).

Now, when this waist exercise device 8 is used for balance force training, the feet are lifted off the floor and the body is in an unstable state. At that time, the urethane sponge 3a makes the balance exercise stable and safe. It works like this. That is, the balance exercise is performed using a body reaction that attempts to return the buttocks to the original posture as the buttocks tilt, but when the seat 1 is tilted, the urethane sponge 3a makes the tilt speed gentle by its elasticity. , Preventing the seated person from falling out of balance and falling.
The vertical elastic body 3 is as described above.

≪Regarding left-right elastic body 6≫
The purpose of providing the elastic body 6 in the left-right direction is that when the seat 1 is rotated left and right from its start position around the tip of the support protrusion 4, a load is applied to this rotation and the seat is formed after the rotation is finished. The seat portion 1 is biased in a direction to return when the portion 1 returns to the start position. As the left-right elastic body 6, a plate-like rubber 6 a commonly called woven rubber was used. The left-right elastic body 6 may use a coil spring or the like. Next, the rubber 6a will be described with reference to FIGS. As shown in FIG. 2, the rubber 6a is attached by attaching one end to the end portion 1a of the seat portion 1 and the other end to the end portion of the lower base 2 in the vertical direction without loosening at four positions at equal intervals. . As the result seat portion 1 rotates, a load is immediately applied to this rotation.
Now, when the seat occupant rotates the seat portion 1 in the direction of the left arrow A from the start position shown in FIG. 2, the rubber 6a extends obliquely and places a load on the rotation as shown in FIG. After this rotation, the seated person rotates the seat 1 back to the start position. At this time, the rubber 6a urges the seat 1 in a direction to return due to the tension.

  Now, when the seat part 1 rotates and the rubber 6a extends to the limit, the seat part 1 cannot be rotated any more, but the seat part 1 does not rotate, so that the twisting motion of the waist which could not be performed can be performed. The waist twisting motion is performed by twisting the waist in the same direction as the seat 1 rotates. As a result, more diversity is added to the muscular movement of the lower back.

Further, the rubber 6a is attached to four places, but is not limited to this, and the magnitude of the load applied to the seat portion 1 during rotation of the seat portion 1 can be reduced by increasing or decreasing the number or changing the strength of the elasticity. Can be set. Furthermore, the magnitude of the rotation stroke of the seat portion 1 is appropriately set by changing the length of the rubber 6a.
The left-right elastic body 6 is as described above.

≪About friction reduction sheet 7≫
The friction reducing sheet 7 reduces the friction generated when the seat 1 that receives a load from the vertical direction tries to rotate in the horizontal direction. FIG. 4 shows a state in which the compressed portion 3b of the urethane sponge 3a is compressed by the seat portion 1, but the start position of the seat portion 1 is centered on the sphere 4a of the support protrusion 4 with this inclined state. If it tries to rotate further left and right, friction will be generated, and this will make it difficult to rotate the seat 1 left and right. Therefore, the rotation is easily performed by interposing the friction reducing sheet 7 having a small frictional resistance.
The friction reducing sheet 7 was formed in a circular shape as shown in FIG. 8, and a notch hole 7 a having the same diameter as the mounting base 4 b of the support protrusion 4 was cut out at the center, and provided between the urethane sponge 3 a and the lower base 2. At that time, the mounting base 4b of the support protrusion 4 is positioned and set in the cutout hole 7a. Now, it is desired that the friction reducing sheet 7 has a frictional resistance as small and thin as possible. For this reason, an end plate having a thickness of about 0.05 mm is flat and slippery. The friction reducing sheet 7 may be any sheet as long as such a condition is satisfied. For example, a vinyl sheet material, an acrylic sheet material, or the like may be used.

In addition, one or a plurality of friction reducing sheets 7 are provided. In this embodiment, two sheets are attached in a stacked manner between the urethane sponge 3 a and the lower base 2. In the case of two sheets, frictional resistance can be reliably reduced by rubbing the overlapping surfaces. As a result, the seat part 1 is rotated left and right smoothly. The friction reducing sheet 7 may be provided between the seat portion 1 and the urethane sponge 3a. As shown in FIG. 4, the friction reducing sheet 7 is larger than the diameter of the urethane sponge 3a, and is formed in such a size that the end 1a of the seat 1 abuts on the friction reducing sheet 7 when the seat 1 is inclined. It is preferable.
The friction reducing sheet 7 is as described above.
≪About cushion 10 and cover 11≫

Next, the cushion 10 and the cover 11 of the lower back exercise apparatus 8 will be described with reference to FIG. The cushion 10 is used by being placed on the upper surface of the seat portion 1 to improve the sitting comfort of the seated person. In the figure, reference numeral 11 denotes a cover. The cover 11 integrally wraps the members of the lower back exercise apparatus 8 including the cushion 10 and is made loose so that the seat 1 can be tilted or rotated left and right. Furthermore, an opening / closing means such as a fastener is provided so that it can be changed according to the color and material preferred by the seated person. As a result, the cover 11 can be washed.
≪Other usage examples≫

  Next, other usage examples of the waist exercise apparatus 8 will be described. The lumbar exercise device 8 can be turned over and used upside down. In this case, the seat portion 1 is on the lower side, the lower base 2 is on the upper side, and the seated person sits on the lower base 2. The lower base 2 is inclined with the socket 5 as a fulcrum, or rotates around the sphere 4 a of the support protrusion 4. The feature of this use example is that the turning radius of the lower base 2 becomes larger by the length of the support protrusion 4, the lower base 2 can perform a larger movement, and the movement around the waist becomes more diverse. .

  6 shows the operation of inclining the seat portion 1 while bringing the end portion 1a of the seat portion 1 into contact with the surface of the friction reducing sheet 7, the end portion 1a of the seat portion 1 is moved to the friction reducing sheet 7. The seat 1 may be inclined without being brought into contact with the surface. This operation is also performed by turning the buttocks.

  Furthermore, this waist exercise device 8 can correct the posture. This is illustrated in FIG. In FIG. 9 (illustration of members other than the seat 1, the lower base 2, and the support projection 4 is omitted), the state where the seat 1 is inclined rearward and its end 1a is in contact with the lower base 2 is shown by a solid line. Thus, the states inclined forward and the end portions 1a abutting the two surfaces of the lower base are indicated by imaginary lines. The seated person can correct his / her posture by sitting with the seat 1 tilted forward or backward as shown in FIG. In addition to performing posture correction, a seated person can accurately eliminate fatigue caused by sitting down by tilting the seat portion 1 in various directions. In these cases, the elasticity of the urethane sponge 3a is set to be smaller than the load applied thereto. In the figure, 9 is a human body.

  Moreover, the lower back exercise apparatus 8 of the present invention can perform an exercise for cultivating balance power by sitting with the feet floating from the floor. In this case, by sitting on the seat 1 in an unstable state, a body reaction that tries to maintain stability is utilized to develop balance power.

  Now, as shown in FIG. 10, the lumbar exercise device 8 lies on its back and can be used by placing the lumbar exercise device 8 under the buttocks. With this posture, the hips are moved by swinging the buttocks left and right (illustrated by arrows in the figure). At that time, the back is warped and a stretch effect can be expected. In this respect as well, lumbar exercises are performed more diversely.

  In addition to the movement around the waist, the lower back exercise apparatus 8 can be placed under the foot, and the movement can be performed by tilting the foot in various directions or rotating left and right.

≪Effects≫
Now, in the lower back exercise apparatus 8 of the present invention, the seat portion 1 operates in a variety of ways integrally with the buttocks. That is, the tilting motion of the seat portion 1 through the fulcrum, the rotational motion of the seat portion 1 around the ball 4a of the support projection 4 and the twisting motion of the waist portion formed by the extension, the end portion 1a of the seat portion 1 being the lower base 2 Through the operation of inclining the seat portion 1 with or without being brought into contact with the surface, and further through the reliable and effective tilting or rotating operation through the fulcrum of the seat portion 1 combined with these operations. The seated person can exercise a wide variety of muscles in the lower back.
In addition, the movement of the seat portion 1 is smooth due to the action of the elastic body 3 in the vertical direction, and its elastic force suppresses the excessive tilting speed of the seat portion 1, thereby eliminating the stress described above and preventing overturning and making it safe. You can exercise your waist. Balance exercise can be performed safely as well. Further, since the seat portion 1 is formed in a circular shape and the end portion 1a is operated so as to face the lower base 2 surface, the end portion 1a is brought into contact with the lower base 2 surface or the friction reducing sheet 7. The operation of tilting the seat 1 is performed stably.

  The waist exercise device 8 is excellent in continuity of exercise. That is, this kind of exercise equipment may become troublesome in the middle of being started and may stop using, but in the lower back exercise equipment 8, the seat 1 is returned to the start position by the urethane sponge 3a. By the urging and the urging by the rubber 6a, the troublesomeness such as applying a force to the seat 1 again is eliminated, and the movement is continued. In addition, when the seat 1 is reciprocated around the ball 4a of the support protrusion 4 and rotated left and right, the seated person can move around the waist with a strong and weak rhythm as described above. However, continued movement is encouraged.

  Furthermore, the muscular fatigue of the lower back caused by sitting on a chair by desk work or the like is naturally eliminated through a tilting operation of the buttocks that is not intended by the seated person. Further, since the tilting motion of the seat portion 1 is performed based on the instinctive reaction of the body 9 as described above, the motion continues. Also, for example, when the body requires the right side of the waist to extend, the buttocks will naturally tilt to the right, but the seated person can continue to sit in this state, and as a result, the fatigue of the corresponding part can be accurately eliminated. The In addition, as described above, it is possible to keep the position of the eyes constant by suppressing the influence of the buttocks movement on the head as described above, and eye fatigue when exercising while looking at the computer screen Is suppressed. In addition, the operating area of the buttocks becomes an operating area centered on the center of the buttocks, and is not particularly noticeable even when exercising during work. And by attaching the cover 11, there is an advantage for those who do not change the appearance of the seat cushion and do not want to see the contents.

  As described above, the lumbar exercise device 8 of the present invention can perform various exercises of the lumbar region with a great effect with a simple and single device configuration, and there has never been such a lumbar exercise device.

The perspective view of the lower back exercise device in the present invention. The front view of the lower back exercise device in which the seat part in the present invention is in the start position. Sectional drawing of the waist | hip | lumbar part exercise | movement apparatus shown in FIG. 2 in this invention. Explanatory drawing of the state which the seat part in this invention inclined and the edge part contact | abutted to the friction reduction sheet | seat. Explanatory drawing which shows the state which the rubber | gum in this invention extends, and a seat part cannot rotate any more. The operation | movement explanatory drawing of the seat part performed, making the edge part of the seat part in this invention contact | abut on a lower base surface. The perspective view of the up-down direction elastic body in this invention. The perspective view of the friction reduction sheet | seat in this invention. The principal part side view which used the seat part in this invention tilting forward and back. The side view which used the lower back exercise device in the present invention in the supine posture. Sectional drawing of the cushion and cover of the lower back exercise apparatus in this invention. The front view of the exercise device shown as a prior art example.

A Left arrow B Point on the seat C Down arrow D Point where the end of the seat abuts against the friction reduction sheet surface 1 Seat 1a End of the seat 2 Lower base 3 Vertical elastic body 3a Urethane sponge 3b Urethane sponge compressed part 3c Urethane sponge cutout 4 Support protrusion 4a Ball 4b Support protrusion mounting base 4c Support protrusion mounting screw 5 Socket 5a Socket mounting base 5b Socket mounting screw 6 Left and right elastic body 6a Rubber 7 Friction reducing sheet 7a Friction Notch hole in relief sheet 8 Lumbar exercise equipment (present invention)
9 Body 10 Cushion 11 Cover 12 Upper plate (Conventional example)
12a End portion of upper plate 12b Seat surface contact portion of upper plate (conventional example)
13 Lower plate (conventional example)
13a Protrusion (conventional example)
13b Tip of protrusion (conventional example)
14 Seat 15 Exercise equipment (conventional example)

Claims (6)

It comprises a seat (1), a lower base (2), and a support protrusion (4) positioned between the seat (1) and the lower base (2), and the support protrusion (4) is the seat (1). In the lumbar exercise device, the seat (1) is inclined in various directions with the front end of the support projection (4) as a fulcrum or rotated left and right around the front end. ,
A vertical elastic body (3) having elasticity is provided between the seat (1) and the lower base (2), and the vertical elastic body (3) is formed by the seat (1) and the support protrusion (4). ), When the seat (1) is tilted from the start position, a load is applied to the seat (1) so as to slow down the tilting speed of the seat (1). ) Urges the seat portion (1) in the direction of return when the device is tilted back to the start position.   A left-right elastic body (6) having elasticity is provided, and the left-right elastic body (6) has a position where the seat (1) starts from the front end of the support protrusion (4). When the seat (1) rotates further to the left and right, a load is applied to the rotation of the seat (1), and when the seat (1) rotates back to the start position, the seat (1) is attached in the returning direction. The lumbar exercise device according to claim 1, wherein   The waist exercise according to claim 2, characterized in that the left-right elastic body (6) is made of rubber (6a) having one end attached to the seat (1) and the other end attached to the lower base (2). Instruments.   A friction reducing sheet (7) having a small frictional resistance is provided between the seat (1) and the lower base (2), and the left and right sides of the seat (1) are centered on the tip of the support protrusion (4). The lumbar exercise device according to claim 1, 2 or 3, wherein the rotation is performed smoothly.   The seat portion 1 is formed in a circular shape, and the seat portion (1) is configured so that the end portion (1a) of the seat portion 1 operates so that the lower base (2) faces directly below. The waist exercise apparatus according to claim 1, 2, 3 or 4.   The waist exercise device according to claim 1, 2, 3, 4 or 5, wherein a cushion (10) formed of an elastic body is used on the seat (1).